Photographic-printing machine.



J. V. McADAM & CJ. EVERETT. PHOTQGRAPHIC PRINTING MACHINE. APPLICATION FI'LED MAR. a. 1917.

1,288,077. Patented Dec.17,1918.

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JOHN V. MQADAM, OF HASTINGS-UPON-f-IUDSON, AND CHARLES J. EVERETT, OF NEW YORK, N. Y., ASSIGNORS T REVOLUTE MAGF JE COMEANY, 0'5 NEW YORK, N. Y.,

A CORPORATION OF NEW YORK.

PHOTOGBAPEIO-PRINTING MACHINE.

Application filed March 3, 1917.

To all whom it may concern.-

Be it known that We, JOHN V. MGADAM and CHARLES J. EVERETT, citizens of the United States, and residents, respectively, of Hastings-upon-Hudson, in the county of lVestchester and State of New York, and of the borough f Manhattan, in the city and State of New York, have invented a new and useful Improvement in Photographic Printing-Machines, of which the following is a specification.

Our invention includes a continuous photographic printing machine, such as a blueprinting machine, in which a vertically disposed rotary cylinder is provided with means for passing a sheet of drawing and its interposed photographic sheet around the cylinder and rotating the cylinder; a source of light being provided for use within the cylinder.

Objects of our invention are to provide a machine which will be very rapid and efficient and at a very low operating cost; which will occupy a small amount of floor space; which may be readily handled and controlled; in which the speed of the machine may be varied to suit different requirements; in which the means for rotating the cylinder and the means for reciprocating the source of light are connected to move at predetermined relative speeds; and in which the rotary movement of the cylinder may e stopped without discontinuing the reciprccatory movement of the source of light.

Further objects are to provide certain improvements in the construction, form and arrangement of the several parts of the machine, as will more fully appear in the detailed description and claims.

A practical embodiment of our invention is represented in the accompanying drawings, in which Figure 1 represents the machine in top plan,

Fig. 2 represents a front view of the machine,

Fig. 3 represents a side view,

Fig. 4 represents a back view,

Specification of Letters Patent.

Patented Dec. 17, 1918.

Serial No. 152,312.

Fig. 5 represents a horizontal section on an enlarged scale,

Fig. 6 represents a detail front view, partly in section, on an enlarged scale, and

Fig. 7 represents a detail vertical central section on an enlarged scale.

The base of the machine is denoted by 1, upon which base we have shown an electric motor 2 as the power plant for the machine. Uprights 8 and 4 on the base support a bracket 5 and its arm 6, in which bracket is mounted a shaft 7. This shaft 7 is provided with a disk pulley 8 which is driven fromthe pulley 9 on the motor shaft by the belt 10. A friction driving wheel 11 is rotatably mounted upon a vertical axle 12 carried by a yoke 13, which yoke is slidable vertically on a bar 1% supported in a lug 6* which extends outwardly from the arm 6. This friction driving wheel 11 is moved along the face of the disk pulley 8 toward and away from the axis of the disk pulley. A spring 15 serves to press the disk pulley 8 against the driving wheel 11.

The yoke 13 is connected by a link 16 to an arm 17 of a rock shaft 18 mounted in suitable bearing carried by the lower horizontal frame 19. This rock shaft 18 is provided with a sector 20 and handle 21 for moving the sector and thereby rocking the shaft.

A clamp plate 22 and its thumb nut 23 serve to lock the sector 20 to the lower horizontal frame 19.

A disk 24 is carried by a shaft 25 mounted in suitable bearings in the arm 6 of the bracket This disk at is engaged with the friction driving wheel 11 at a point opposite to the engagement of the driving wheel with the disk pulley 8. The arrangement is such that as the driving wheel 11 is moved toward the axis of the disk pulley 8, it will be simultaneously moved away from the axis of the disk 24.

The shaft 25 is also provided with a pulley 26 which drives a pullev 27 through a belt 27 carried by a horizontally arranged worm shaft 28, which shaft is mounted in suitable bearings on a lower horizontal.

' ring 32 having an inwardly projecting annular flange 33. Thi ring 32 rests upon two diametrically opposed grooved rollers 34, each of which rollers is carried by a horizontall arranged rocking lever 35 pivoted at 36 to a vertically arranged post 37 swiveled in the lower horizontal frame 19. A spring 38, carried by the post 37, engages one arm of the lever 35, tending to yieldingly hold the grooved roller 34 at the limit of its upward movement. It will thus be seen that the rollers 34 have a yielding vertical movement'and a limited lateral movement, thereby allowing the vertically arranged cylinder 31 to have a limited bodily movement in all directions.

The uprights 39, which support the lower horizontal frame 19 below the bottom of the cylinder 31, also upport an upper horizontally arranged frame 40 above the top of the said cylinder.

The meansfor passing the sheet of drawing with its interposed photographic sheet around the cylinder 31, and, at the same time, rotate the cylinder together with the said sheets, comprises the following elements: F our vertically arranged rolls- 41, 42, 43, 44, are disposed around the exterior of the cylinder 31 and interposed between the upper and lower horizontal frames 40 and 19. The rolls 41 and 42 are located in close proximity tothe cylinder at the front pf the machine and the rolls 43, 44, are located a little-distance from the cylinder at the back of the machine. A plurality of endless narrow belts 45 pass around the rolls 41, 42, 43, 44, and the cylinder 31 leaving a small portion of the cylinder exposed along the front of the machine. These narrow belts are held in their spaced relationship by a series of pins 46projecting inwardly from a vertically arranged bar 47 supported by the horizontal frames 40 and 19. The belt tightening roll 44 tends to hold the belts 45 taut and in snug engagement with the cylinder 31, holding the cylinder pressed against the front vertical rolls 41 and 42.

The roll 44 is mounted between the arms 48, 49, of upper and lower levers pivoted on upper and lower stud axles 50, 51, respec tively, carried by the horizontal frames 40 and 19. Springs 52, 53, engage the said arms 48, 49, of the upper and lower levers tending to swing the roll in a direction to hold the narrow belts 45 taut.

.to strip the sheet of drawings and its interposed photographic sheet from the cylinder 31.

The roll 41 is herein shown as the drive roll for the belts 45 and cylinder 31 and the operation of this roll is controlled as follows: A vertical rod 56 is connected at its lower end to one arm 57 of a foot treadle 58,pivoted at 59 to a lug on the base 1. The upper end of this rod 56 extends through the lower horizontal frame 19 and the worm wheel 30 axially into the roll 41.

One member 30* of a clutch is formed on the worm wheel 30 and the other member 41* of the clutchis formed on the roll 41.

The depressing of the foot treadle 58 will lift the rod 56 and the upward movement of this rod will cause the upward movement of the roll 41 a sufficient distance to disengage the clutch members 30* and 41*. A further manual means for separating these clutch members is provided at the upper end of said roll 41 where the roll is provided'with the upper horizontal frame 40 and also through a swinging cam 60 havinga suitable operating handle 61. This swinging cam 60 is interposed between a pin 62 on the rod 59 and a fixed cam 63 on the upper horizontal frame 40 so that'the swinging movement of the cam member 60 will lift the rod 59 and thereby the roll 41. A spring 64 is interposed between the top' of the roll 41 and the under side of the upper horizontal-frame 40 for insuring the downward movement of the roll to bring the clutch members 30*, 41*, into engagement when the roll isfree to do so. 7

The shaft of the roll 42 extends upwardly through the upper horizontal frame 40 and is provided above said frame with a suitable hand wheel 65 for an independent manipulation of said roll 42 to insure the proper start of the feeding in of the sheet of drawing and the interposed photographic sheet before the roll 41 is clutched to its driving means. r

The source of light is herein shown as an are light which is reciprocated vertically as follows: A flexible cord 66 is connected at one end to the lamp67 whence it passes upwardly and over a pair of pulleys 68, 69, mounted in a bracket 70 uprising from the upper horizontal frame 40. The cord 66 then passes downwardly andis secured at its other end to a counterbalance weight 71, which slides along a vertical guide or track 72 secured to the upper and lower horizonand lower sprockets 74, 75, and a connecting rod 7 6 connects one of the links of the chain 73 with the counterbalance weight 71, so that, as the chain is driven in one direction, the w ight 71 will be reciprocated. The upper sprocket 74 is mounted on a cross bar 77 and the lower sprocket 7 5 is mounted in a bracket 78 depending from the lower horizontal frame 19. The lower sprocket 7 5 is driven from the shaft 28 in the present instance by a lantern wheel 79 on one face of the pulley 27.

The electric light cable 80 leads from the junction box 81 to the lamp with sufficient slack to permit the lamp its full reciprocating movement. In the present instance, the light cable SO is fastened at 80* to the counterbalance weight 71 and leads from there over a pair of pulleys 82, 83, mounted in the bracket 70 and thence to the lamp. The lamp is guided in its reciprocatory movements by providing it with a slide 84: which travels along a vertical guide or track 85 extending upwardly through the transparent hollow cylinder 31 at the front of the machine. A light guard and reflector 86 is secured to this guide 85 and to the upper and lower horizontal frames 40, 19, bridging the space between the rolls 41 and 42 and preventing the escape of the light rays through the cylinder at this point.

In operation; the sheet of drawing and photographic sheet are inserted into the front of the machine between the horizontal belts 45 and the vertically arranged transparent cylinder 31. This may be done while the machine is at rest, the handle of the belt roll 42 being manipulated to start the sheets properly. The machine may then be started and the sheet of drawing, with its interposed photographic sheet, passed around the cylinder, the cylinder traveling with the said sheets. At the same time the source of light 66 is reciprocated. As the sheets reach the belt driving roll 41, the fingers 55 strip the sheets from the cylinder and direct them to any suitable point. By manipulating the handle 21 the speed of the friction driving means for both the lamp and the cylinder may be adjusted to the desired speed. The belt tightening roll 4% serves to hold the belts 45 and the interposed sheets snugly against the surface of the cylinder as they are passingaround the same and, at the same time, hold the cylinder in its position in engagement with the rolls 41 and as at the front of the machine. If it should be desired to discontinue the move ment of the cylinder without affecting the movement of the source of light, the clutch members 57, 58, may be disconnected either by the foot operated means or the hand operated means, as found most convenient.

By having the cylinder rest upon the lat erally movable vertically yielding rollers 34, the cylinder is permitted a limited bodily movement in any direction, to permit it to adjust itself without strain upon any of the parts.

What we claim is:

1. In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, and means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and rotate the cylinder.

2. In amachine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and rotate the cylinder, and means operable to reciprocate the source of light.

3. In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and rotate the cylinder, and means operable to reciprocate the source of light, said cylinder rotating means and light reciprocating means being connected to move at predetermined relative speeds.

4. In amachine f the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and rotate the cylinder, means operable to reciprocate the source of .light, said cylinder rotating means and light reciprocating means being connected to move at predetermined relative speeds, and means for disconnecting said cylinder rotating means and said light reciprocating means.

In a machine f the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein and a yielding support for the cylinder, permitting limited bodily movement of the cylinder in any direction.

6. In a machine of the character described, a plurality of laterally movable vertically yielding rollers, a vertically arranged rotary transparent cylinder resting thereon for permitting limited bodily movement of the cylinder in any direction and a source of light arranged for use within the cylinder.

7. In a machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, a plurality of horizontally arranged narrowendless belts operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and means for carrying and driving said belts.

Cir

8. In a machine of the character described, a vertically arranged transparent cylinder, :1 source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable to pass a sheet of a verticall arran d rotar trans arent y l y a cylinder, a source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and means engaging the narrow belts for maintaining them in their spaced relationship.

10. In a machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder, vertically arranged rolls around which the belts pass and means for driving one of said rolls.

11. In a machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable to pass a sheet of drawing and an interposed protographic sheet around the cylinder, vertically arranged rolls around which the belts pass, means for driving one of said rolls,

and manual means for connecting and disconnecting said roll audits driving means at pleasure.

12. In a machine of the character described, a vertically arranged rotary transparent cylinder, a. source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder, vertically arranged rolls around which the belts pass, means for driving one of said rolls, and foot operated means for connecting and disconnecting said roll and its driving means at pleasure.

13. In a machine of the character described, a vertically arranged rotary transparent cylinder, a. source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder, vertically arranged rolls around which the belts pass, means for driving one of said rolls, and hand operated means for connecting and disconnecting said roll and its driving means at pleasure.

14. In a machine of the character described, a; vertically arranged rotary transparent cylinder, a source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operableto pass a' sheet of drawing and an interposed photographic sheetaround the cylinder, vertically arranged rolls around which the belts pass, means for dr1v1ng one of said rolls,

and both foot and hand operated means for I connecting and disconnecting said roll and its dr1v1ng means at pleasure.

15. In a machlne of the character described, a vertically arranged rotary trans tate the cylinder, means operable to reciprocate the source of light, means for'positively guiding the source of light in its reciprocatory movements and a combined light guard and reflector within said cylinder. V

17. In a machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, means operable to pass a" sheet of drawing and an interposed photographic sheet around the cylinder and rotate the cylinder, means operable to reciprocate the source of light, means for positively guiding the source of light in its reciprocatory movements and a. combined light guard and reflector carried by said guiding means within said cylinder.

18. In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and means for stripping the said sheets from thecylinder.

19. In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and a friction driving means for rotating said cylinder.

20. In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photograhpic sheet around the cylinder and a variable speed friction driving means for rotating said cylinder.

21. In a machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and a friction driving means for reciprocating the source of light.

22. In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, means operable to pass a; sheet of drawing and an interposed photographic sheet around the cylinder and a friction driving means for reciprocating the source of light and rotating said cylinder.

23. In a machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and a variable speed friction driving means for reciprocating the source of light.

In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use -therein, means operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and avariable speed friction driving means for reciprocating the source of light and rotating said cylinder.

25. In a. machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable to pass a sheet of drawing and an interposed photographic sheet around the cylinder and a friction driving means for reciprocating the source of light and for driving the said narrow belts.

26. In a machine of the character described, a vertically arranged rotary transparent cylinder, a source of light arranged for use therein, a plurality of horizontally arranged narrow endless belts operable. to pass a sheet of drawing and an interposed photographic sheet around the cylinder and a variable speed friction driving means for reciprocating the source of light and for driving the said narrow belts.

27. In a machine of the character described, a vertically arranged transparent cylinder, a source of light arranged for use therein, a: plurality of vertically arranged rolls and horizontally arranged narrow endless belts passing around said rolls and cylinder, one of said rolls acting as a tension roll for keeping the belts taut and for holding the cylinder in engagement with two of said rolls.

In testimony, that we claim the foregoing as our invention, we have signed our names this 12th day of J an. 1917.

JOHN V. McADAM. CHARLES J. EVERETT.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of IPatents,

Washington, D. G. 

